Update identity links

aspnet/migration/identity.rst

@@ -1,5 +1,7 @@
 .. include:: /../common/stub-topic.txt
 
+.. _migration-identity:
+
 |stub-icon| Migrating from ASP.NET Identity 2.x to 3.x
 ======================================================
 

aspnet/security/authentication/2fa.rst

@@ -1,3 +1,6 @@
+.. _security-authentication-2fa:
+
+
 Two-factor authentication with SMS using ASP.NET Identity
 =========================================================
 

aspnet/security/authentication/accconfirm.rst

@@ -1,3 +1,5 @@
+.. _security-authentication-account-confirmation:
+
 Account Confirmation and Password Recovery with ASP.NET Identity
 ================================================================
 

aspnet/security/authentication/introduction-to-aspnet-identity.rst

@@ -136,8 +136,8 @@ For additional information and guidance on migrating your existing apps to the A
 Next Steps 
 ----------
 
-- `Migrating Authentication and Identity From ASP.NET MVC 5 to MVC 6 <http://docs.asp.net/projects/mvc/en/latest/migration/migratingauthmembership.html?highlight=identity>`_
-- `Migrating from ASP.NET Identity 2.x to 3.x <http://docs.asp.net/en/latest/migration/identity.html>`_
-- `Account Confirmation and Password Recovery with ASP.NET Identity <http://docs.asp.net/en/latest/security/authentication/accconfirm.html>`_
-- `Two-factor Authentication with SMS Using ASP.NET Identity <http://docs.asp.net/en/latest/security/authentication/2fa.html>`_
-- `Enabling authentication using external providers <http://docs.asp.net/en/latest/security/authentication/sociallogins.html>`_
+- :ref:`mvc:migration-auth-membership`
+- :ref:`migration-identity`
+- :ref:`security-authentication-account-confirmation`
+- :ref:`security-authentication-2fa`
+- :ref:`security-authentication-social-logins`

mvc/migration/migratingauthmembership.rst

@@ -1,3 +1,5 @@
+.. _migration-auth-membership:
+
 Migrating Authentication and Identity From ASP.NET MVC 5 to MVC 6
 =================================================================